Doorlock



July 28, 1925 v 4 S. D. BUTTERWORTH DOORLOCK Filed June 16, 1922 2Sheets-Sheet I Sana FL .27. BUTTEXWMM July 28, 1925. 1,547,357

S. D. BUTTERWORTH DOORLOCK Filed June 16, 1922 2 Sheets-Sheet 2 q nQentou.

.SflMUELJ-I Burmr/mrm Patented July 28, 1925.

'UNITED STATES "PATENT OFFICE.

. SAMUEL D. BUTTERWORTH, O F LANSING, MICHIGAN.

DOORLOCK.

Application filed June 16, 1922. Serial No. 568,684. 7

tain new and useful Improvements in Doorv locks, of which the followingis a specification.

This invention relates to door locks and especially to a door lock whichhas a bolt that may be dead locked. It is the object of the presentinvention to afford a dead lock setting device which permits the settingdevice to be arranged for dead locking before the door is closed.However the dead locking action is delayed until the door is closed topermit the bolt to retract in the closing of a door.

The dead locking mechanism is especially adapted for a form of latchbolt which requires no retractor or rollback to disengage the bolt fromthe keeper socket. The door is opened simply by exerting force upon thedoor which causes the roll head of the bolt to climb out of the keepersocket. By employing a simple dead locking mechanism, the bolt whichnormally operates simply as a latch bolt then becomes a lock boltsecurely locking the door and also insuring against the latch beingretracted by f a casement knife as can ordinarily be done where thenight lock applies only to the outside retractor.

. Another feature of this invention is the peculiar finger piece used inconnection with i the dead locking setting device. This'finger piece isa small piece of bent metal strip which operates not only to'receive thefinger contact but also has a spring action inherent in it which keepsthe dead lock setting devices in any position to which they are set.

This and other features that appear are more fully described in thedescription following:

In the drawings:

Fig. 1 is an elevation of the lock.

Fig. 2 is an elevation of the lock looking at the face of the lock.

Fig. 3 is an elevation of thelock parts with the cover plate removed,the dead locking members being in dead-locking position.

Fig. 8.

The face plate of the lock casing is designated a, the front plate e andthe cover plate 0. These look casings are made so that they can be usedeither asright hand or left hand lock casings. The cylinder lock 6 maybe screwed into either side of the lock casing, the opposite side of thecasing being closed with a plug 100. After the lock Z) has been screwedinto one of the threaded bosses d, designed to receive it, the lockhousing may be locked against being turned out of the boss by means oflocking lug 6. This locking lug is carried on the end of a lever f; thislever flocks on the fulcrum roll 9. A flat spring h tends to rock thelocking lug away from the housing of the cylinder lock. The threaded rod2' bears against the opposite end of the lever f and pushes the lockinglug toward the cylinder lock against the stress of the spring h. Thisthreaded rod 2' protrudes through the face of the lock casingand has aslotted end 7' adapted to receive ascrew driver for turning the rod inor'out to adjust the looking lug with respect to'the cylinder lock.

There are two of theselocking lugs, one on positions.

The sliding bolt is ofpeculiar cbnstruction more fully detailed andclaimed in my prior' application No. 511,7 61. The lock head is formedby a rubber roll 70. This is journaled on a pin 'm-which is supported atits ends on the slides Into the inner ends of these slides screw thesliding rods 0 which are guided through the brackets p. The coil springsq abut against the washers 1' at one end and at the other end againstvthe cross bar 8 and tend to push the bolt outwardly in the usual way.

This bolt may be retracted by simply pulling or pushing on the door asthis causes the rubber roll is to climb out of the keeper socket (notshown) and free itself from the striker plate. and claimed in my priorapplication above referred to. This eliminates the necessity This ismore fully described of using knobs or other forms of retractors tooperate the door, which simply needs a handle to pull the door.

The dead locking member is designated 25 and comprises a hub providedwith teeth a and an arm 2). The safety pin type spring tends to maintainthe dead locking mem her in working position as shown in Fig. 3, whilethe sliding dog y en aging between two of the teeth holds the deadlocking member in its retracted position.

The dead lock setting devices comprise with this spring w and the levers which is moved by the linger piece 1 protruding from the face plate ofthe lock. When the finger piece is in position shown in Fig. 3, itraises the dog releaser 2, which is guided in vertical reciprocation bythe plate 3 and rib t. This slide or releaser has a beveled or camsurface 5 on itstop which is thereby brought into the path of the cam 6on the cross bar a. As shown in Fig. 4 this slide and the cam surface 5is out of the path of this cam 6. Now supposing one desires to set thedead locking member 'so that when the door is closed it will dead-lockthe bolt, the setting lever 2 as shown in Fig. t is pulled down, thisraises the slide 2 to the position shown in Fig. 3, however, the slidingdog ;2 is still engaging between the .teeth of the hub of the deadlocking member as shown in Fig. 4. This brings the dog releaser 2directly into the path of the cam 6. This cam will wipe the cam face 5of member 2, causing this member to swing on the pivot 7 and the bill ofmember 2 will engage with the notch 8 and withdraw the sliding dog yfrom engagement with the teeth of the hub oi the dead locking'member t.The spring 02 will now rotate the dead locking member through a quarterturn until the arm 41 engages against the stop 9. The dead lockingmember is now on and the bolt cannot be :retracted because the arm 0bears directly against the cross bar .9 and resists any thrust.

It will thus be seen that the dead lock setting device may be firstfixed to the on position, the door may then be closed permitting thebolt to retract, then automatically the dead locking member shoots intothe on posit-ion. These dead locking setting devices are accessible onlyat the face of the lock and the edge of the door so they cannot bereached from either side of the lock case.

However, there are these additional features of this lockthe deadlocking lever can be set from either the inside with the thumb turn orfrom the outside with the cylinder lock key. The thumb turn has aspindle 10 which engages in the square opening 11 in the hub of the deadlocking member. This constitutes "a direct connection for turning thedead locking member either to the on or off position. The sliding atesgee? dog y is provided with a beveled head so that when the dead lockingmember is turned in either direction it may be caused to retreat out ofthe way, but the spring 00 does not have sutiicient power to cause it toretreat.

The cylinder lock is provided with an arm 18 having teeth on its end andadapted to engage with the teeth u of the hub of the dead lockingmember. The rotating paths of these two sets of teeth intersect,consequently the dead locking lever may be turned in either direction bythe cylinder lock to either put the dead locking lever on or release thedead locking lever. The arm 13 ot the cylinder lock may be turned tocomplete its 360 degrees so that the key can be extracted in the wellknown manner required in connection with pin tumbler locks.

From the above description it will be apparent that this single boltlock has the teatures of very much more complex locks requiring moremechanism and some or them several bolts. The single bolt used in thislook may be used as a latch bolt and it may be dead locked from eitherthe inside or out side and the dead lock released from either the insideor outside; furthermore, the dead lock may be set while the door is openand its action delayed so that the dead lock does not become effectiveuntil the door is closed, thereby doing away with the necessity of usinga key to dead lock the door when going out.

Attention is also called to the finger piece Z used on the dead locksetting lever. This finger piece comprises a strip of spring metal bentto hook on the end of the dead locking lever and provided with a pair ofbowed ends 14: which are always under stress by reason of engaging theinside of the "face plate of the lock, consequently they always insurefriction to hold the dead lock setting lever in any position of itstravel.

When the dog releaser 2 is set to automatically dead lock the slidinglatch bolt upon the closing of the door, it assumes the position asshown in Fig. 3. hen the dead locking member is actuated by the key orthumb turn, the teeth a will engage the sliding dog 3 to force it downwhich will carry with it the dog releaser 2, throwing dog settingdevices into an cit position. lVhen the dog y returns to the position asshown in Fig. 4 the dog releaser will be thrown out of the notch 8, andremain in an inoperative position.

Vhat I claim is:

1. In. a lock, the combination of a case, abolt slidable in the case, adead locking member, means for said dead locking member to turn thesameinto on and off position, and dead locl se ting devices which may beset when the door is open to automatically cause the dead locking memberto turn to locking position when the door is closed. I

2. In a lock, the combination of a case, a sliding bolt guided therein,means for yieldingly projecting said bolt, a dead locking membercomprising a toothed hub and an arm arranged to engage a portion of thebolt to hold it in its projected position, and a cylinder lock providedwith an arm adapted to engage the toothed hub of the dead locking memberto turn the dead locking member to on or off position, but which permitsthe arm of the cylinder lock to complete its turn of 360 degrees for theextraetioii of the key.

3. In a lock, the con'ibination'of a case and sliding bolt therein,means for yieldingly projecting the belt, a dead locking membercon'iprising a toothed hub and an arm that may be turned to engage aportion of the bolt to hold the same against retraction, and a cylinderlock provided with an arm that has an'intersecting path of rotation withthe teeth of the hub to turn the dead locking member to on or offposition.

4:. In a'loc k, the combination of a case, and a bolt slidable therein,means for yieldingly projecting the bolt, a dead locking member providedwith a toothed hub and having an arm which may be engagedwitli a portionof the bolt to lock the same against retraction, a spring normallytending to turn the dead locking member into engaging position, a dogengaging the toothed hub for preventing said spring turning said deadlocking member, and means which may be set so that the retracting of thebolt into the case on the closing of the door causes said means towithdraw said dog and permit the spring to turn the dead locking leverto working position.

In lock, the combination of a case, a bolt slidable therein, means foryieldingly srojecting the bolt, a deadlocking member, a spring tendingto force said deadlocking member to a position to hold the bolt againstretraction, separate means countervailing the action of said spring soas to hold the deadlocking member in a non-working position, deadlocksetting devices which can be set in the path of a portion of the bolt sothat when the bolt retracts into the case upon the closing of the doorsaid means is actuated to release the said countervailing means andpermit the spring to force the deadlocking member into working positionto prevent retraction of the bolt.

6. In a lock, the combination of a case and a sliding bolt guidedtherein, means for yieldingly projecting said bolt, a rotatable deadlocking member, a spring tending to turn the dead locking member into aposition to encounter part of the projected bolt to prevent theretraction of same, a dog arranged to engage the dead locking member tocountervail the action of the spring and to hold the member in releasedposition, a

dog releasing member provided witha cam face, a cam carried by the boltand means for moving the dog releasing member into the path of the cam,whereby on retraction of the bolt, the'cam strikes the cam surface whichcauses the dog releasing member to engage and withdraw the said-dog fromthe dead locking member and permits the spring 1 to turn the deadlocking member into position to prevent the retraction of the bolt,

7. In a lock, the combination of a case,,a

bolt slidable therein, means for yieldingly projecting the bolt, a deadlocking member I 'eon'iprising a toothed hub and an arm which iiay beturned to have the arm engage behind the bolt to prevent its retraction,aspring normally tending to turn the dead locking member into suchposition, a dog provided with beveled head engaging between two teeth ofthe head and which may be'disengaged only when thedead lockingHi0l1'il)61 is turned by a direct application of force, a dog releasingmember having a cam surface and a cam on the bolt arranged to I having atoothed hub and an arm which may be turned to engage part of the bolt toprevent retraction of the same, a sliding dog having a beveled headadapted to engage between the teeth 'of the hub, a dog releasing memberin the form of a member which may both slide and pivot and is providedwith a cam surface, a lever accessible from the face of the lock whichmay be operated to swing the dog releasing member so that the camsurface encounters a part of the bolt, whereby upon retraction of thebolt a part engages the cam surface of the dog releasing member andcauses this member to pivot and swing against the said dog to withdrawthe same from the dead locking member, and a spring for turning the deadlocking member to a position to prevent the retraction of the said boltwhen the dog is released.

9. In a lock, the combination of a case provided with a threaded socketon each side, a bolt slidable in the case, means for yieldinglyprojectingthe bolt, a plug and a cylinder lock barrel that may beinterchangeably engaged in either the threaded socket to make the look aright or left hand lock,

the dead locking member arranged to be actuated by the cylinder lock toengage behind the bolt to prevent the retraction of same, and a thumbturn which may engage directly with said dead locking member interchangeably from either side of the case and which is located lIleccentric relation with the cylinder lock and with the plug.

.dead locking member offset to one side of the said threaded sockets butin the path of the cylinder lock arm and a thumb turn Which may bedirectly engaged interchangeably from either side with the dead lockingmember.

11. In a lock, the combination of a case, a bolt slidable in the case, adead locking member, thumb turn means for operating said dead lockingmember to position the same in on or off position from the insideofthe-door, key operating means for operating the dead locking member toposition the same in on or oil position from the outside of the door anddead lock setting-deviceswhich may be set in the face of the look whenthe door is opened to automatically cause the dead locking member totake the locking position when the door is closed.

12. In a lock, the combination of a case, a bolt slidable in the case, adead locking member, means operating from the inside of the lock to turnthe dead locking member to on or off position, a key operat ing meansoperating from the outside of the door to place the dead locking memberin the on or off position, and dead locl setting devices which may beset when the door is opened to automatically cause the dead lockingmember to take the locking position when the door is closed.

13. In a look, the combination of a case, a bolt slidable in the case, adead locking member, a key operating means for operating said deadlooking member to position the same in the on and off positions from theoutside of the door, and dead lock setting devices which may be set whenthe door is opened to automatically cause the dead locking member totake the looking position when the door is closed.

M. In a lock, the combination of a case, a bolt slidable in the case, adead looking member, means for engaging said dead looking member to turnthe same into on and off position, dead lock setting devices which maybe set when the door is open to automatically cause the dead lockingmember to turn to locking position when the door is closed, and meansfor returning said dead lock setting devices to inoperative positionwhen the dead locking memher is turned to of? position.

15. In a lock, the combination of a case, a bolt s idable in the case, adead-looking me 'iber, means for engaging said dead-locking member toturn the same into an on or oft position, dead-lock setting deviceswhich may be set to automatically cause the dead-locking member to turnto locking position when the door is closed and means for temporarilymoving the said dead-looking member to a non-interfering position whenthe door is opened by a key from the outside.

In testimony whereof I atfiX my signature.

SAMUEL D. B'UTTE'RVVOR-TH.

